Snap-switch.



No. 863,807. 'PATENTED AUG. 20, 1907. P. W. SANFORD.

SN-AP SWITCH.

APPLIQATION FILED 1113.1, 1905.

wi l 3 /3 9 7 Witnesses: Inventor:

5 tain new and useful Impu of which the following is a .The present invention r for electrical 'circuits, and of cut-outs known as sn l movable circuit opening a mus? FRANK W. SANFORD, .OF

In. season sounuuoranr, NEW h COMPANY, A CORPORATION OF our;

Specification of Letters Eatent.

Application filed February 1, 1905,

To all whom iii may concern.

Be it known that I, FRANK W e the United Stat of'Schenectady, St

a quick or snap a SAN]? cs, residing at S ate of N ap switches to the operating part of the device.

The object of my invention is pensive, strong, ofthis character apart without the use of special In. carrying out ing bracket with transverse bearing switch blades, a transverse bearing stops on the bracket' to hold th 'treme open or closed mentthercwith is being tensi lever fulcrumed upon the tran vidcd with shoulders arrange plate so that upon a given angle rela will be disengaged from the the switch blades opposite extreme chcncctady, county ew York, have invented cerements in Snap-Switches specification. elates' to cut-out devices more especially tothe type nd closing member is given ction upon the application ot' force Serial No. 243,627

out), a citizen in which the to: provide an inexcompact and highly efiicientidevice consisting of a minimum number of apparatus.

my invention I provide a supportstops or proj for the reception of t latch memb to operate in conjun position, while a sp moving the tively to th stops and move with a quick position under the spring. The operative parts. are mo usual manner upon suitable stationary conductor wires.

For a more complete un had to the following detailed. ccom'panying drawing forming tion reference ma description and the a a part of this speci Figure 1 shows in operating parts of of my invention;

tion of a two-button swi operative parts. of is a similar view tion; Fig. 4 is a mechanism; and Fig.

d'erstanding y be fication, in which perspective the a snap-switch einbod Fig. 2

oned by sverse bearing and pro (1 to overlap the latch operating lever through e latch plate, the latter ections and a suitable he shaft of the er fulcrumed on the ction with the e switch blades in ex ring in engagean operating together with action to the recoil of the unted in the y an insulating support having contacts and connections for the of my invendisassembled ylng one form is a vertical longitudinal sectch. base and plate with themy switch shown therein; Fig. 3 with the switch mechanism in sectransverse section of the switch of the switch-blades.

The base 1 is of porcelain and ha t erein opening from the'top side.

edges of the end 5 is a perspective view of one a chamber 2 To the upperl walls of'the base are secured by i bracket.

screws 3 two attacllin adapted to be secured to the wall of which a face plate 5 6. 'Thc lower side of the entrance of the conductor wires, and these holes are b toward the top of th they are clamped in which extend upwa the stationary contac- "The operative part bracket 11 having an wall of thebasc bctw by wall of the base an with radial stops 19a ing plate 25 and the plate 25 has a main central part upper end, and at the low sitelyinding posts ASSIGNOR TO GLNEPAL NEW YORK.

is crusts cl rics ELECTRIC Patented Aug. .20, 1907.

is connected chase, whi

rec rdly through is 1G.

t each end.

cylindrical actuating the base is aperturcd. at 7 csses in the base by g lugs 4 whereby the base is a house and to by nu-ans of screws lo; adjacent to 8 extending upwardly at their lower ends screws 9 the base and into s are carried by a supporting arm 12 secured een the pairs of 5 screws 13 extendin to the lower inner tationary contacts g upwardly through the lowcn ngaging tapped holes in the The upright arm 14 has a large central aperture 15, a segmental aperture 16, t jections 17, and at its 11 wos idc stops or pro pper end a segmental r cccss 18 The central aperture receives an upset bearing blo stepped cylindrical surfaces 2]. 22, a central. bore 24 in which the ma 'Fulcrumed upon the ck having two- 7 are oppolarly about a center above the axis of the shaft and each provided with a shouldered notch near its upper and adapted to engage a corresponding sto supporting bracket. at each end with an 32 carried at the inner e its upper edge-With a tr the spring, formed a segmental circular spring arms into extreme positi p or projection 17 on the The actuating lever 26 is provid ed eye shoulder 35 which 29 so that when the lever is rocked on the shoulder will engage the 3l-for the reception of a rivet ml of a push-button 33, and at ansverse finger and at the lower edge of 34 for engaging the lever 26 IS underlies the eccentrically-curved arm 29 which is in engagement with its respective extended at its.c

so that as the act back and forth i tacting with the end The spring 37 is in th 38 39 bent out radiall will cross each other transverse finger 34 of The shaft 40 consist eral grooves 41. near stop 17 and force it inward locking engagement therewith. The should I entral section into a transv finger 36 which projects into the segmental ap wall.

ly out of or 35 is crsc stop crturc 16 uating lever is rockedthe finger travels n the aperture and operates to limit the extent of the rocking movement of the 1 ever by cons of the aperture. I e form of a helix with its ends y so that when in position they and engage opposite sides of the each end and the actuating lever. s of a cylindrical bar with pcriphtwo side slots 42 at ing plate 24 are coupled together.

some distance from one end for the reception of a slotted crank plate 43 by which the switch-blades and the lock- The crank plate 43 has an aperture 44 of a size to permit the shaft 40 to be freely inserted, and leading from one side of said aperture across the axis of the plate is a key slot 45 into which the slotted section of the shaft is adapted' to be entered and locked against axial and angular movement relatively to the plate. The upper edge of the plate has a long transverselyhent finger 46 which normally overlies the finger 34 on the actuating lever, passes between the ends 38 39 of the spring, through the notch 28 of the locking plate 25, and the segmental slot 18 at the top of the supporting bracket. I he crank plate has a second aperture 47 opposite the aperture 44 for the reception of a pin 48 carried by the liub oi the right-hand switch-blade 49 whereby the crank plate is held from radial movement on the shaft and the switchblade is locked in angular relation tothe plate.

The left-hand switch-blade 50 is similar to the righthand except that one of the hub plates 51 is provided with a peripheral recess for the reception of the free end of the finger 46 of the crank plate. The switchblades 49 and 50 are held upon the shaft 40 by split washers 52 sprung into the. grooves 41 In order to insure the engagement of the shoulders 30.w'ith the stop projections 17 guides 53 are arranged adjacent the latter which cooperate with cam surfaces 54 on the inner edges-oi the arms 29.

The operation of my device is as follows: Assuming the parts to be in the position shown in Fig. 3 with the left-hand shoulder 30 of the locking plate in engagernent with the left-hand stopor projection 17, then, by pressing down upon the right-hand button 33, the actuating lever 26 is caused to move clockwise and its finger 34 carries the end 39 of the-spring 37 to the right, while the opposite end 38 is held by the finger 46 of the crankplate 43 which is locked against movement by its engagement with the locking plate 25. As the shoulder 35 on the actuating lever 26 approaches the left-hand stop 17 it forces the bent arm 29 inwardly and finally frees the shoulder 30 from epgagement with the lefthand stop, whereupon' the locking plate 25 is released and moves clockwise under the recoil of the spring 37 carrying the switch-blades 49 and 50 and crank plate 43 into the position shown in Fig. 2 where they-are brought to rest by the engagement of the crank plate finger 46 with the right-hand shoulder 19 oi the supporting bracket. When itis desired to move the switch-hlades into closed position the left-hand button 33 is pressed upon and a corresponding series of operations take place in the opposite direction.

' releasing I do not desire to restrict myself to the particular form or arrangement of parts herein shown and described, since it is apparent that they may be changed and modified without departing from my invention.

What 1 claim as new and desire to secure by Letters Patent of the United States, is,

gage alternately with snid spring arms to disengage them from said stationary pnrr.

2. In a snap switch. the combination of a stationary support provided with projections. n pivoted switch-blade mounted upon said supprrt. a locking member connected to more with sold blade and having nppositely'disposed spring arms adapted to ultei'n:itel \"en: -'a5 e said projections. u spring acting on said switch-blade. and an acidstinglever havingmeans to tension said spring and means to disengage said arms from said stops.

3. In a snap switch. the combination of a stationary snppsrt provided with projections on one side thereof. a pivoted switch blade carried by said support. a fiat lock in: member for said blade adjacent said support and pro-.

vided with mipositely-dispos'ed flexible arms adapted to alternately emerge the projections thereon. and an actuating" lever adjacent said locking plate and provided with means for pntfin' slid switch blade under tension and thereafter !(l lei-kiw member from said projections.

4. In a snap-switch. the combination of a stationary slipper! having projections thereon. a bearing block carried by said support. a shaft jourualed in said block. a Switchblade mounted on said shaft. :1 locking plate fulcrumed on said bearing block and provided with oppo sitely-dispised spring arms adapted to engage said projections. a spring surrounding said bearing block and operm tively engngmg said switch blade. and an actuating lever fulcrumed on said bearing: block adjacent said locking In a snap-switch. the combination of a supporting brucket provided on one surface with stops and guides. a

switch-blade pivotolly mounted thereonga pivoted loclcnrc plate for said blade having-oppositelydisposcd spring arms provided on their inner edges with cam surfaces to engage said guides and on their outer edges with shouldered notches to engage said stops. a spring in operative engagement with the switch-blade, and an actuating lever pivoted adjacent said locking platennd provided with n lin- :er to engage said spring and a shoulder arranged toengnge said spring arms and force them out of encasement with their respecrive stops when lhe lever is oscillnled.

In witness whereof. l have hereunto set my hand this 30th day of .lanuiiry, 1905.

FRANK w. SANFORD.

Witnesses Beam-xiii B. IIrr.r.. llnrm' Onrorm. 

